TM 9-2350-287-20-12-22. SIMPLIFIED TEST EQUIPMENT FOR INTERNAL COMBUSTIONENGINES (STE/lCE) (continued).a. STE/lCE PMCS - (continued).(15) COMPRESSION UNBALANCE TEST - DCA.NOTEl Before doing Compression Unbalance Test,engine must beat normal operating temperature.l To prevent discharging of batteries, do notperform more than two (2) compressionunbalance test in a row.A. 1. Shutoff fuel supply (refer to TM 9-2350-287-10).2. Crank engine with no fuel for 5 seconds toclear fuel from cylinders.3. Dial 14 into TEST SELECT.4. Press and release TEST button.Does prompting message “GO” show on display?IB. 1. Pull and hold fuel shutoff handle (refer to TM9-2350-287-10).2. Crank engine and watch VTM to make sure itshows “- -- -“ on display.3. Stop cranking engine when VTM displayshows “OFF or E013“.4. Wait for VTM to display number.Is a number on VTM display?If the number is between 0 and 10, STE/lCEPMCS is completed. If the number is higherthan 10, notify Direct Support Maintenance.Continued to next page2-407Make sure VTM is operatingproperly (refer to TM 9-4910-571-12&P).
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